I still don't understand what you think our "agenda" is. And no one ever said there shouldn't be the label HSP, or that people can't or shouldn't call themselves HSP if it works for them.
The problem is when professionals and clinicians are "diagnosing" HSP (which is not a diagnosis) instead of Autism because it has less stigma attached. And now this label and associated misinformation are being spread, which could lead to people who actually *are* Autistic not getting the proper information, supports, and self-knowledge. That's my whole "agenda", as you call it: preventing the spread of misinformation.